Osbourne's announcement comes on the heels of other big news: on July 5, the star gave his final concert — featuring a Black Sabbath reunion! The band's guitarist Tony Iommi, bassist Geezer Butler and drummer Bill Ward all made an appearance for the show, called "Back to the Beginning."

"Last Rites" also includes reflections on Osbourne's relationship with his wife Sharon, as well as his encounters with fellow rockers Slash, Bon Scott, John Bonham, and Keith Moon, and "the harrowing final moments he spent with Motörhead's Lemmy Kilmister," according to the press release.